These photos come from the microscope we have through Sound Toxins , a Sea Grant program that works as an early warning system for harmful algal blooms. Who named it red tide? Jumping in here to say that oysters are fed as juveniles in hatcheries. Much of the work in a hatchery centers around growing algae in tanks, and getting the food mixture just right for happy mommy, daddy, and baby oysters.
Also, about the tides: know that not every place on earth has two tides a day. It's pretty complicated. Read this beautiful book to learn more! We're fortunate to farm in an incredibly clean estuary in Washington State, which has an extensive monitoring program to warn shellfish communities about toxic algae blooms far in advance.
Total guess. This is why we need science. Of course, the obvious drawback to this is that sometimes it pays to be a picky eater. For more info read about the history of the New York oyster industry. Ignorance can be bliss! Are oysters really aphrodisiacs?
Are oysters still alive when I eat them? Is it safe to eat oysters during months without the letter R? How can you tell if an oyster has gone bad? Can you recycle oyster shells?
Oysters eat phytoplankton or small bits of algae suspended in the water. They are filter feeders, which means that they obtain their food by filtering water in and over their gills. Adult Virginica oysters can filter up to 50 gallons of water per day. To demonstrate their fascinating ability, here is a time-lapse of oysters in filtering action. Oysters are voracious vegetarians, but fairly picky about what they nosh on. The Isochrysis goes into the gut and the Chlorella and silt goes into the pseudofeces rendering it bright green!
I have done this with radiotracers and the degree of efficiency is remarkable. It is one reason why the American oyster is so adaptable and can survive in high silt loaded waters while many other organisms struggle and suffocate with fouled gills. Yes, yes they do. Oysters expel both real poop AND pseudofeces , which are particles of non-food things in their food.
I mean, can someone just register oysterpoop. Probably not. There is limited scientific evidence that supports this claim, but what we lack in science-based data, we humans love to fill in with anecdotal truth! Basically, if eating a dozen oysters get you in the mood, then just call it a win. How did oysters get such an amorous reputation?
Oysters do contain a pretty high amount of zinc and other great nutrients vitamin B12, thiamin, riboflavin, niacin, vitamins C, D, and E, iron, magnesium, and selenium , which are important in reproductive development and overall health. A study published in found two amino acids, D-aspartic acid D-Asp and N-methyl-D-aspartate NMDA , in shellfish, like oysters, that were shown—at least in animals—to increase testosterone production.
So there is that. But foods and the act of eating can suggest sex to the mind, which in turn can help stimulate desire in the body. Many of us probably unknowingly was introduced to the term aphrodisiac in grade school while studying Greek mythology. They have extremely strong adductor muscles to close their shells when threatened. Oysters feed by extracting algae and other food particles from the water they are almost constantly drawing over their gills.
They reproduce when the water warms by broadcast spawning, and will change gender once or more during their lifetime. Commercial harvesting of oysters is regulated throughout most of their range, and they are not currently listed as threatened or endangered.
However, they are extremely sensitive to water quality and susceptible to coastal pollution, and populations in many areas where they were once abundant have dwindled or disappeared.
They can also retain toxins in their flesh, making them unhealthy for human consumption. All rights reserved. Common Name: Oysters. Scientific Name: Ostreidae.
Type: Invertebrates. Diet: Omnivore. Group Name: Colony, bed, reef. There are five species of oysters Sure you have over a hundred varieties of oysters, but did you know that all of these hail from only five species? Aside from the water they grow in, what makes these bivalves different from each other are the shells. The European Flat has a large, straight shell with fine ridges, whereas the Pacific Oysters are smaller with wavy casings.
Kumamotos are also smaller, and the shell is rounder and pale, which is similar to the Olympias, though this one has a smoother shell with a bit of iridescent coloring. Finally, the Atlantic species looks like a comma or tear drop and tends to be on the larger side. Oysters clean the water Each oyster filters about 30 to 50 gallons of water a day. A day! Think of how much water a whole bed of those awesome bivalves are cleaning, which makes these not only tasty creatures, but good-for-the-environment ones as well.
Oysters and absinthe are a match made in heaven Forget champagne. At the Brooklyn restaurant Maison Premiere , oysters and absinthe are all the rage.
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